It is one of the city's oldest educational institutions with roots dating back to a seminary founded by the Jesuits during the 17th century.

It had a strong tradition in the maritime sciences and is the predecessor of the present-day University of Dubrovnik.

Today, it is known for its academic rigor and religious affiliation, nurturing students in both intellectual and spiritual development.

As one of Dubrovnik’s most prestigious schools, the Diocesan Classical Gymnasium has produced many notable alumni who have contributed significantly to various fields, including the sciences, arts, and the Church.

The school continues to attract students who are interested in pursuing a rigorous classical education while maintaining its strong ties to the city's historical and cultural heritage.